Watch Glee Dream On Season 1 Episode 19 Online Streaming Video this Wednesday night at 9:00 p.m. May 18, 2010 only on FOX tv channel. As Will's high school rival, special guest star Neil Patrick Harris, returns to McKinley to bring down the glee club. Elsewhere, Artie's dreams are exposed. Find out more on the all new full episode to watch Glee Dream On Season 1 Episode 19 Online Streaming, its replay and full video stream at fox.com.